stegmeyer



( No Mode l.) 4 SheetsSheet 1.

0. 'STEGMEYBR. MACHINE FOR WORKING LEATHER.

v No. 600,965. Patented Mar.22, 1898.

m: uonms FEYERS coy, puomumo. WASHINGTON. a. c.

(No Model.)

' 4 Sheets-Sheet 2. O. STEGMEYER. MACHINE FOR WORKING LEATHER.

No. 600,955; Patented Mar. 22,1898.

co. nnm'cuumnu WASHINGTON, 03c.

(No Model.) 4 SheetsSheet 3.

0. STEGMEY ER. MACHINE FOB WORKING LEATHER.

No. 600,955. Patented Mar. 22,1893.

M mw:

4 Sheets-Sheet 4.

(No Model.)

0. STEGMEYER. MACHINE FOR-WORKING LEATHER.

N0..600,955. Patnted Mar. 22,1898.

was 00., worauwau WASHINGYON, u. c.

U ITED STATES PATENT ()EEICE.

OTTO STEGMEYER, OF GHARLOTTENBURG, GERMANY.

MACHINE FOR WORKING LEATHER.

SPECIFICATION forming part of Letters Patent No. 600,955, dated March 22, 1898.

Application filed J H116 4, 1897. Serial No. 639,452. (No model.)

To all whom it may concern:

Be it known that I, OTTO STEGMEYER, a subj ect of the German Emperor, and a resident of Oharlottenburg, near Berlin, Germany, have invented certain new and useful Improvements in Machines for Working Leather; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyin g drawings, and to letters and figures of reference marked thereon, which form a part of this specification.

My invention has relation to machines for working leather, and more particularly to machines whereby the skins or hides are first smoothed and spread out and then calendered and in which the skin or hide is supported by a plate adapted to be moved into contact with the smoothing-out or brush rolls and then with the calenders.

The object of my invention is to obviate these disadvantages, and this I attain by causing the supporting plate or apron to move continuously to and from the brush and cal ender rolls, whereby I- am enabled to use a plurality of such plates or aprons.

The further object of this invention is to provide means whereby the skins or hides may be placed upon and removed from their supports without stopping the machine; but that my invention may be fully understood I will describe the same in detail, reference being had to the drawings, in which Figure 1 is a vertical transverse section; Fig. 2 a front elevation, partly in section, and Figs. 3, 4, and 5 detail views, of a machine embodying my invention. Fig. 6 is a view similar to Fig. 1, illustrating a modification in the arrangement of the chain driving-gearing, and Fig. 7 is a detail view of a portion of one of the machine-standards;

The framing of the machine consists, essentially, of two standards A A, that are l shaped in cross-section and are arranged with their side flanges a turned toward or facing each other. From these standards are supported the-shafts of four pairs of sprocketwheels 1, 2, 3, and 4 for two endless carrierchains a, the shafts f of the upper sprockets carrying each a toothed wheel gin gear with.

pinions h, one at each end of a cross-shaft 7a, which latter also carries a belt-pulley i. In suitable bearings in said standards are also mounted two calender-rolls q q and below the same two brush-rolls r r. The calenderrolls q and q are geared together by means of gear-wheels Z and Z, (shown in dotted lines in Fig. 6,) while the brush-rolls r and r are each provided with a belt-pulley belted, respectively, by an open and a cross belt (shown in dotted lines in Fig. 1) with a small belt-pulley s on a main driving-shaft 11, that has its bearing also on the aforesaid standards A, whereby a comparatively rapid rotation is imparted to said brush-rolls, said main driving-shaft '0 carrying, as usual, a fast and loose belt-pulleyp and p. By means of the belt-pulley s of the driving-shaft o the shafts of the brush-rolls 'r r are driven,

respectively, by an open and a cross belt with high speed, the belts running over pulley t t. On one of the journals of the calender-roll q is secured a large gear-wheel 0 in gear with a pinion w on the main driving-shaft v, whereby a comparatively slow rotation is imparted to the calender-rolls q q, while the belt-pulleyt' on cross-shaft 7c is belted by a cross-belt with a like pulley p on the shaft of the calender-roll g, which carries the gear 0. The calender-roll q and the brush-roll 0" have their bearings in the short vertical arms of weighted angle-levers 00 0c, fulcrumed in lugs or ears m projecting from the standards A A, as more clearly shown in Fig. 2, the inward swing of said rolls or their swing toward their companion rolls q and 0", respectively, being adjusted and limited by means of set bolts or screws d, passing through the vertical short arms of said angle-levers and having bearing on the lateral flanges a of the standards A A, while the pressure exerted by the rolls upon the skin-supporting plate passing between them and their companion rolls is regulated by suitably shifting the weights 00 ac on the horizontal arms of their supportinglevers w 00. The brush-roll r and the calender and brush rolls q and r have shields 8 and 8, the latter also serving in a measure as a guide for the skin-supporting plates, as will appear hereinafter.

In the lateral flanges a of the standards A are formed recesses 6 and 7, Fig. 1, for the passage of the carrier-chains, the recesses 6 being of such a depth as not to allow certain guide-lugs on the skin-supporting plate or plates to pass through, and at the foot of each standard is an inclined guide-ledge (F, for purposes presently explained.

The support for the skins consists, as here inbefore intimated, of plates or aprons I) Z), covered with a more or less yielding or elastic materialas felt, rubber, or the likeand have at one end on opposite sides brackets e for the connection of pivot-bolts 2, whereby said plates or aprons are pivotally connected with and suspended from and between the carrier-chains a, Fig. 4, and at their opposite ends said plates Z) are provided with guidelugs u, projecting from their lateral edges. These lugs are preferably of ellipsoidal form in cross-section and bear against the inner face of and are guided by the lateral flanges a of the standards A. Below the guidesprockets 2 is arranged a beam 5, on which the finished skins are hung as they are removed from their plate-supports.

The operation of the machine when constructed as described is as follows: A skin S is hung from the upper edge of the plate I), when the guide-1n gs u of said plate I) will rest upon the inclined ledges a at the foot of standards A, Fig. 1, the carrier-chains moving in the direction of the arrows, Fig. 1. Said plate will gradually assume a perpendicular position as its upper edge is being carried from the guide-sprocket 3 to the like sprocket 4, when said plate will be carried in a perpendicular direction first between the brush-rolls r 9", then between the calender-rolls q q to the sprocket-wheels 1. As the upper edge of the plate moves farther, the guide-lugs u on the free end of the plate will come in contact with the lateral flanges a of standards A. Now, as shown in Fig. 1, the shafts ff of the upper sprocket-wheels 1 have their bearings so located that the said sprocket will project some distance beyond the rear face of the standards through suitable openings in the lateral flanges a thereof, so that the plate I) will assume an inclined position relatively to a perpendicular, owing to the guidelugs 10 engaging the rear flanges a of the standards A A, thereby preventing the free end of the apron from swinging into line with its pivoted end, thus causing that portion of the skin S on the rear face of the plate to hang free. The angle of inclination of the plate will increase as said plate is carried downward by the chains a until its upper end passes the guide-sprockets 2, as shown in dotted lines in Fig. 1, whereby that portion of the skin S which hangs free of the plate will hang in rear of the beam 5, and by holding fast such portion of the skin or pressing it against the beam the skin will be stripped from its plate while the latter is being carried from said sprockets 2 to sprockets 3 or to starting-point of the plate I), and another skin may be placed upon said plate. During the descent of the plate-support Z) the shield 8 for the brush-roll r and calender-roll (1 will assist in the proper guidance of the said platesupport, the lower rounded enlarged edge of said shield extending sufficiently close to the nip of the working rolls 0' r and q q for this purpose. In the present case two plates 1) b are hung from the chains; but it is evident that more than two plates or but one plate might be arranged without departing from the nature of my invention.

In Fig. 6 I have shown an arrangement whereby the machine is somewhat simplified in that two sets or pairs of guide-sprockets are dispensed with by arranging the axis of rotation of the upper driven sprockets 1 and the lower guide-sprockets 2 in the same vertical plane, said sprockets being of like diameter, and have their bearings in the standards A at suitable points to move and guide the carrier-chains in a plane suflicicntly distant from the rear lateral flanges a of the standards as to cause the plates 1) b, guided at their free end by said flanges, to assume the required inclination, so that the rear portion of the skin will hang free from the face of the plate for the purpose stated. In this arrangement the skins are removed from and placed upon the plate during its travel from the driven sprockets 1 to the guide-sprockets 2, and in View of the described arrangement of said guidesprockets the inclined ledges Men the standards are also dispensed with.

Having thus described myinvention, what I claim as new therein, and desire to secure by Letters Patent, is

1. In a leather-Working machine, the combination with the working rolls, endless chains, an apron suspended therefrom and mechanism for propelling the chains to carry the apron vertically to and from the nip of said rolls; of means for imparting to the apron an inclined position during its travel from and toward said working rolls, for the purpose set forth.

2. In a leather-working machine, the combination with the work rolls, an endlessehain carrier movable continuously in one and the same direction to and from the nip of said rolls, a plate-support for the skin, suspended from the carrier, and a beam for the finished skin proximate to the chain carrier on one side of and below the rolls, of guides whereby the plate-support is guided to clear the aforesaid beam so that a portion of the skin will hang over one side of such beam, for the purpose set forth.

3. In a leather-working machine, the combination with the standards A, A, provided with inturned vertical flanges a, the workrolls revoluble in hearings on said standards, an endless-chain carrier and mechanism for moving the same continuously in one and the same direction, of a plate-support for the skins, means for suspending the same from said carrier, said plate-support provided at its free end with laterally-projecting lugs u adapted to engage the aforesaid flanges a, of standards A, and said chain carrier arranged to carry the'plates to and from the nip of the aforesaid rolls, for the purpose set forth.

4. In a leather-Working machine, the combination With the standards A A provided With inturned vertical vflanges a and guideledges a, the brush-rolls r r, the calenderrolls q q, and mechanism for revolving the former rolls at a greater speed than the latter rolls, of the endless-chain carrier at a, the sets of sprockets 1, 2, 3and 4 arranged relatively to one another as set forth, a plate support or supports I) hung from said carrier and I provided at their free end with laterally-pro- OTTO STEGMEYER.

Witnesses:

CHARLES H. DAY, HENRY HAsPER. 

